| Name | From | To | Age range |
|---|---|---|---|
| Corylus constans | Paleogene | Neogene |
|
| Corylus californica | Paleogene | Neogene |
|
| Corylus unica | Paleogene | Neogene |
|
| Corylus americana | Early Tertiary | Late Pliocene |
|
| Corylus sp. McIn.,1991 | Late Paleocene | Middle Eocene |
|
| Corylus kenaiana | Eocene | Eocene |
|
| Corylus sp.2 Sung et al,1964 | Late Eocene | Middle Oligocene |
|
| Corylus crassa | Late Eocene | Late Eocene |
|
| Corylus heterophylla | Late Eocene | Pleistocene |
|
| Corylus sp.1 Sung.et al,1964 | Late Eocene | Middle Oligocene |
|
| Corylus sp. Sigo.& Asat.,1956 | Oligocene | Oligocene |
|
| Corylus sp. Roma.,1956 | Oligocene | Oligocene |
|
| Corylus sp. Pokr.,1956 | Oligocene | Oligocene |
|
| Corylus sp.A | Oligocene | Oligocene |
|
| Corylus sibirica | Oligocene | Late Neogene |
|
| Corylus simplex | Oligocene | Middle Oligocene |
|
| Corylus ferox | Late Oligocene | Early Miocene |
|